Pujols does many things with the stride, and after looking at many at bats sometimes this changes from at bat to at bat.
There are three things you will see Pujols do with the stride, one is a normal short stride, two is to move the foot a few inches (2-5 inches) and have the tip of the toe touching the ground early, and three is a perfect no stride.
If you watched Pujols in the HR derby, they made a big deal of him going to a knee/leg lift. Pujols has said he used the leg/knee lift up through the minor leagues, so it wasn't something new he just tried.
There are three things you will see Pujols do with the stride, one is a normal short stride, two is to move the foot a few inches (2-5 inches) and have the tip of the toe touching the ground early, and three is a perfect no stride.
If you watched Pujols in the HR derby, they made a big deal of him going to a knee/leg lift. Pujols has said he used the leg/knee lift up through the minor leagues, so it wasn't something new he just tried.